Frame coltstbrttctiolt



March 8, 1932. E. s. 'MaCPHERsON 1,8 8,895

' FRAME CONSJTRUCTION 7 Filed March 51, 1950 Patented Mar. 8, 1 932,

4 Darren S TES ATeNTo -pme;

EARL]: S. HACPEERSON, OI DETROIT, MICHIGAN, ASSIGNOB TO HUT P MOTOR GARCOB- ?OBATION, F DETROIT, MICHIGAN, A CORPORATION OF VIRGINIA.

mun cons'rauorron Application filed March 31, 1980. Serial No. 440,474.

This invention relates generally to motor experienced capable ofresisting torsional or twisting bers of numerous shapes and designs.

chassis frame construction therefor.

. Heretofore conslderable difliculty has been 1n constructmg a chassisframe movements when regular roads. to the uneven the same is moved overir- The foregoing is due not only distribution of weight on the chassisframe, but also to the design of the sill members which are usuallychannelshaped in cross-section. 'Many manufacturers in an efiort toovercome twisting of the frame, as. ointed out above, brace the frame ata plura ity of'spaced points by cross mem- While cross bracing the frameis essential for various reasons, nevertheless, it has been found inactual practice to be ineffective for'preventing'torsional movement ofthe sill members. Another method devisedforresistingtwisting movement ofthe sill members is to form the same" tubular or box-shaped. This lattermethod has proved satisfactory .for preventin twisting of the frame, butis extremely ob ectionable owin to the difficulty encountered insecuring t e cross. braces and other members to the sills.

The present invention contemplates overcoming the above disadvantages byconstructing the sill members of the manner that the same resisttorsional movements and at the same time provide for convenientlysecuring the cross members and in view,

other parts upon the frame.

With the foregoing as well as other objects the invention resides in thepeculiar construction of the sill members which wil be made "moreapparent as this description proceeds,- nection with wherein:

Figure 1 is a fragmentary perspective view of a chassis frame.

Figure '2 is a cross-sectional .view taken the accompanying .drawmgs,

through one of the sill membersshown in- Figure 1.

Figure 3 is aview similar to Figure 2 show g t e manner in which variousdevices may be secured to the 5111 member,

the cross frame in such aespecially when considered in conexample, tothe web Figure 4 is a cross-sectional view through a sill member ofslightly modified construc- 'tion;

Figure 5 is a view similar to Figure 4 show- I in Figure 1 a vehiclechassis frame oomprising sill members 11 normally held in proper spacedrelation to each other bymeans o braces 12 having the opposite endsthereof rigidly As pointed outm the preceding description,-

the sill members are constructed to resist torsi'onal or twistmgmovement andare so d esecured to the S111 members.

signed as to permit the attachment of various parts thereto withfacility.

As shown in Figure-2, are formed of a pair of inter-fittingsubstantia'lly1 channel-shaped members 13 and 14 having t other andcooperating to form a box-like construction. The cross-sectional area ofthe channelrsh'aped member 14 is preferably substantially less than thecross-sectional area'of the. channel-shaped member 13 .and the legportions 15 of the former channel-shaped member are spaced inwardly asubstantial dlstance from 't e corresponding leg portions 16 of thechannel-shaped member 13 providing ample space 17 of the cross bracemembers 12 and the securing means therefor, designated by the referencecharacter 18. The leg portions 15 1 of the channel 14' terminate inlaterally projecting foot flanges 19 adapted to be secured to the baseportion of the channel-shaped member .13 in any suitable manner.

In order to permit-securing members to the base portions or webs ofeither of the channel-shaped members 13 and 14, suitable openings 20and21, shown in Figures 2 and 3, respectively, may be formed in. the webportions for receiving a wrench or other suitable tool. The constructionis such that in the event it is desired to secure a bracket, for

the sill members 11 for receiving the end portions portion ofthe channele base portions thereof spaced from each member 13,' a bolt or othersuitable securing element, designated by the reference character 22, isextended throughanopening in the web portion of the channel 13andengaged -by extending a suitable tool through the opening 21 in thebase of the channel 14. On the other hand, if it is desired to secure amember to the web of the channel 14, the securing element is extendedthrough a suitable opening in the latter web portion, as indicated at 23in Figure 2, and engaged by extending the tool through the apertureformed in the web of the channel 13. Thus from the above arrangement itwill be observed that the sill members 11 are not only constructed toresist torsional or twisting movements, but are also designed to permitsecuring various parts to the flanges and base portions of the Y A sillwith facility.

The constructioh shown in Figure 4 is substantially identical to the one.hereinbefore set forth except that the inner member 24 is of a slightlydifferent configuration; As Will be apparent from the above figure, theinner member 24 difi'ers fromv the vchannel-shaped member 14 inthat thefoot-flanges 25 are With this construction it will be apparent that thesecuring elements 29 also serve to secure the inner member 24 to theouter member 28. The manner in which various accessories such asbrackets and the like are secured to the inner and outer members 24 and28, respectively, is preferably accomplished in the same manner as inthe first described form of the invention.

In Figure 5 of the drawings I have shown a sill member 30 formed ofinter-fitting channel-shaped members 31 and 32 differing from theconstructions hereinbefore described in that both of the channels openinwardly. The inner channel-shaped member 32 is seecuredwithin thechannel 31 with the base portion thereof spaced a substantial distancefrom the base portion of the channel 31 with the result that a box-likeconstruction is obtained. As shown in the above figure, the legs 33 ofthe inner channel member 32 engage the correspondinglegs 34 of the outerchannel member 31 and form a sup ort to which thecross braces 12 aresecure as indicated at 35. In this construction the securing elements 35for the cross brace members also function to secure the channelshapedmembers 31 and 32 together. As shown in Figure 6', provision is made forsecuring various accessories to the web-or first-named channel.

- base base portions of the channels 31 and 32. The arrangement providedis substantially the same as hereinbefore set forth and accordingly adetailed description of the same is believed unnecessary.

In each of the.modification's set forth above, the sill is formed offlanged members having portions cooperating with each other to forma-box-like construction for resisting torsional stresses and havingother portions permitting the attachment of various accessories to thesill member.

While several embodiments of the invention are illustrated hereinsomewhat in .detail, it will be obvious that numerous modifications maybe resorted to without departing from the spirit and scope ofthis'invention and accordingly reservation is made tomake such changesas may come within the purview of the accompanying claims.

What I claim as my invention is:

1. A chassis frame having a sill comprising a channel-shaped memberhaving a base and flanges projecting transversely from the base, and asecond similar channel-shaped member extending for .substantially thefull length of the channel-shaped member aforesaid and located withinthe latter with the base portion thereof spaced laterally from the baseportion of said first-mentioned channel and with the flanges thereofprojecting toward the latter base portion and spaced inwardly from theflanges of said first-named channel.

'2. A chassis frame having a sill com rising a channel-shaped memberhaving a ase and flanges projecting transversely from the base, and asecond similar. channel-shaped member extending for substantially thefull length of the member aforesaid and located within the channel ofthe latter with the flanges thereof extending toward the base portion ofsaid first-mentioned channel in spaced and substantially parallelrelation t the flanges of the latter channel.

3. A chassis frame having a sill comprisin a channel-shaped memberhaving a base an flanges projecting transversely from the base, a secondsimilar channel-shaped member extending for substantially the fulllength of the member aforesaid and located within the channel of thelatter with the flanges thereof extending toward the base portion ofsaid first-mentioned channel in spaced and substantially parallelrelation to the flanges of the'latter channel, and foot flangesprojecting laterally outwardly from the ends of the flanges on saidsecond channel and abuttin the Inner surface of thebase portion of sai4. A chassis frame having a sill comprisin a channel-shaped memberhaving a base an flanges projecting transversely from the a secondsimilar channel-shaped member located within the channel of the memeiasea ber aforesaid with. the flanges thereof extending toward the baseportlon of said firstmentioned channel in spaced and substantiallyparallel relation to the flanges of the latter channel, foot flangespro'ecting laterally outwardly from the ends 0 the flanges on saidsecond channel and abutting the inner surface of the base ortion of saidfirstnamed channel, and anges forming a con- 0 tinuation of said footflanges projecting in the direction of the flanges on saidfirstmentioned channel in contacting relation with the inner surfaces ofthe latter.

5. Achassis frame having a sill comprising a channel-shaped memberhaving a base and flanges projecting transversely from the base, asecond channel-shaped member located within the channel of the memberaforesaid with the base-portion'thereof spaced laterally from the baseportion of the first named chan nel and with the flanges thereofprojecting toward' the latter base portion" and spaced inwardly from theflan es of said first named channel, and a cross race for the chassisframe having ortions extending into the first named c annel-shapedmember between the flanges' on the latter and the flanges on the secondnamed channel-shaped memr. a In testimony whereof I aflix my signature.

' 1 EARLE S. MAOPHERSON.

